Windows 7 File Recovery
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Backup and Restore (formerly Backup and Restore Center) is the primary backup component of
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and
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. It can create file and folder backups, as well as system images backups, to be used for recovery in the event of
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, hard disk drive failure, or malware infection. It replaces NTBackup, which has been part of Windows since Windows NT 3.51. Unlike its predecessor, it supports CDs,
DVDs The DVD (common abbreviation for Digital Video Disc or Digital Versatile Disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any kind ...
, and Blu-rays discs as backup media. Backup and Restore offers file and folder backup in all editions of Windows. But its full set of features are only available on high-end editions of Windows, i.e., the Professional, Business, Enterprise, and Ultimate editions. Microsoft
deprecated In several fields, especially computing, deprecation is the discouragement of use of some terminology, feature, design, or practice, typically because it has been superseded or is no longer considered efficient or safe, without completely removing ...
Backup and Restore in Windows 8.0, recommending to use the File History app for file-based backup and a third-party solution for system imaging. Despite its deprecation, however, it is part of all versions of Windows released thereafter. The
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counterpart of Backup and Restore is called Windows Server Backup.


Backup types

Backup and Restore supports two different types of backup: File and folder backup, and system image.


File and folder backup

The Backup and Restore app can create backup copies of individual files and folders. These backups are saved to ZIP files. Two methods of file backup are supported. The first, normal backup, stores everything selected for backup. The second, incremental backup stores only files that are changed after a previous backup. File backup in Windows Vista does not allow users to choose specific files, locations, or users to back up; instead, it backs up content from all users based on categories: audio tracks, compressed files, documents, email, photos, recorded television shows, videos, and additional user files. Users can only choose whether to perform a backup of a certain category. Microsoft hoped that this simplistic approach would prove appealing to users who were easily appalled by "a long tree of checkboxes." File backup in Windows 7 presents two options for operation: ''Let Me Choose'', which allows users to perform backups of specific folders,
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, and to create a system image; and ''Let Windows Choose'', which creates backups of all personal data in user folders and libraries, and also creates a system image.


System image

The other method of backup, called ''Complete PC Backup'' in Windows Vista or ''system image'' in Windows 7, is a
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-by-block
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of the system, saved in a VHD file. The block-based backup is more efficient at performing subsequent differential backups, as only the blocks that have changed need to be backed up. However, Backup and Restore can also only create system images of disks formatted with the
NTFS New Technology File System (NTFS) is a proprietary journaling file system developed by Microsoft. Starting with Windows NT 3.1, it is the default file system of the Windows NT family. It superseded File Allocation Table (FAT) as the preferred fil ...
file system. One could later restore the VHD through the
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. Beginning with Windows Vista SP1, system images can be restored to a machine with a different motherboard, which may have a different
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, but the target machine must have the same number of disks. Alternatively, one could mount the VHD image as a virtual disk, allowing extraction of individual files. The mounted virtual disk has all the features of an actual volume, meaning that the Previous Versions feature of Windows 7 is available on it. In Windows 7 Enterprise and Ultimate, it also possible to boot from the VHD file. Finally,
hypervisors A hypervisor (also known as a virtual machine monitor, VMM, or virtualizer) is a type of computer software, firmware or hardware that creates and runs virtual machines. A computer on which a hypervisor runs one or more virtual machines is calle ...
such as
Hyper-V Microsoft Hyper-V, codenamed Viridian, and briefly known before its release as Windows Server Virtualization, is a native hypervisor; it can create virtual machines on x86-64 systems running Windows. Starting with Windows 8, Hyper-V superseded W ...
,
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, and
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support VHD as their disk format, so it is possible to use these backups in
virtual machines In computing, a virtual machine (VM) is the virtualization/ emulation of a computer system. Virtual machines are based on computer architectures and provide functionality of a physical computer. Their implementations may involve specialized hard ...
.


Backup targets

Backups could be stored on the root of any storage device other than the one being backed up or on a
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. However, Backup and Restore does not support backing up to a subfolder of a volume. It also supports CDs, DVDs, and Blu-ray discs as backup destinations, but does not support
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s. Windows Server Backup in
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does not support hard disk drives with large sector sizes (4096 bytes) unless they support 512e, 512 byte emulation.


Operation

Backup and Restore is only a Frontend and Backend, frontend for interfacing with the user. The Frontend and Backend, backend component is a Windows service called Windows Backup. This service runs independent of user sessions and can perform scheduled backups even when no users have logged onto the system. Scheduled backups, by default, run every Sunday at 7 P.M. During a backup, Windows uses the Shadow Copy, Volume Shadow Copy Service (VSS) to ensure that files are not changed while they are being backed up. VSS ensures both file system-level consistency and app-level consistency for apps registered as ''VSS writers''. In Windows Vista and Windows 7, another Windows component called System Restore also uses VSS. As such, System Restore can use shadow copies that Backup and Restore created during a full system backup. As mentioned above, Backup and Restore is merely a frontend. Windows ships with an alternative frontend for Windows Backup, the WBAdmin Command line utility, command-line utility. Only a member of the Administrators groups or the Backup Operators group can run WBAdmin.


Edition comparison

The Home Basic edition of Windows can perform manual file backups. The Home Premium and later editions can automate file backups, create file backups on network locations, create backup schedules, and perform incremental backups of files. The Professional, Business, Enterprise, and Ultimate editions support both the system image and Shadow Copy. The user interface of Complete PC Backup in Windows Vista does not support creating a system image to a network location; however, the WBAdmin command can perform this operation. Unlike Windows Vista Home Premium, however, backing up files to a network share is not available in Windows 7 Home Premium. Windows 7 provides a user interface option to create a system image to a network location.


Deprecation

With the release of Windows 8, Microsoft deprecated Backup and Restore in favor the new File History feature. Microsoft cited low use as the contributing factor for its deprecation, though the company retained all of its functionality for users who relied on it; the feature was moved to a Windows 7 File Recovery Control Panel applet and all previous points of access were removed. In Windows 8.1, all interface functionality—with the exception of system image creation, which is in a System Image Backup option in File History—were removed. Scheduling system image backups is not supported either. WBAdmin, however, remained available. (As mentioned above, both Backup and Restore, and WBAdmin are merely frontends for the Windows Backup service.) With the release of Windows 10, the Backup and Restore (Windows 7) Control Panel applet was made available again. File History remains the default and preferred method to back up local content in Windows 10. For the system image functionality, Microsoft recommends using third-party software.


References


External links


The Filing Cabinet: Storage Team Blog about file services and storage features in Windows
{{Microsoft Windows components Backup software Windows components Windows Vista Windows 7 Windows 8 Windows 10